【摘要】 针对一种拟应用于电动汽车轮毂式直驱系统的新型横向磁通永磁电机进行了综合实验研究,以探索有效的控制方式。首先按照惯例探讨了永磁同步运行模式,发现常规U/f=C控制时的功率因数和效率均偏低,进而测定基于电压与电流控制规律的V形曲线,发现Id=0控制能使电机效率提高,但功率因数依然随负载增大而降低。为此,进一步探讨了基于Id=0的无刷直流驱动模式,发现正常换相时效率和过载能力仍然不够理想,但采用提前换相方式后改进效果十分明显,由此测定了最佳提前换相角与负载转矩的关系曲线,奠定了工业应用基础。更多还原

【Abstract】 In order to explore effective control scheme of novel transverse-flux permanent magnet motors applied to direct-drive electric vehicles,comprehensive experimental research is done in this paper.As the routine practice,PMSM mode is investigated firstly.To be specific,both low power factor and low efficiency are found existing in U/f =C control.Then the V-shaped curve is tested to reveal the regularity of voltage and current.On this basis,the control strategy of Id =0 improves efficiency,while power factor decreases with load torque increasing.Therefore,BLDCM mode equivalent to Id =0 is further discussed.While the efficiency and load capacity are still unsatisfactory in conventional commutation,the performance is markedly improved with phase advance commutation adopted.Finally,the relation curve between optimal phase advance angle and load torque is tested,laying the foundation for industrial application.更多还原